Chloride Processing of the Zircon Product for Separation of Rare-Earth Elements

Naimanbayev, Madali

doi:10.5593/sgem2019/1.3/s04.095

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Fig 2 Change In the Partition Coefficient Depending On The Ionic Radius Of Lanthanides1

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2021

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“…Previously [28][29][30] it was found that a mixture of ammonium sulfate with sulfuric acid is the most optimal desorption solution for the rare-earth metals desorption from saturated Purosorb 140 cationexchanger.…”

Section: Fig 2 Change In the Partition Coefficient Depending On The Ionic Radius Of Lanthanidesmentioning

confidence: 99%

Sorption Extraction of Rare Earth Metals from Wet-Process Phosphoric Acid

Baltabekova

Kenzhaliyev

Lokhova

et al. 2021

ARFMTS

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When apatites and phosphorites are processed, up to 30% of rare earth metals are converted into wet-process phosphoric acid. Wet-process phosphoric acid from the phosphorite treatment process differs from apatite one by impurity composition, i.e. the iron content is by 3.5 times, and calcium is by 5.0 times more. The complex composition of the wet-process phosphoric acid from the phosphorite treatment process requires additional researches to select optimal ion exchangers and technological parameters of sorption. Various aspects of sorption have been studied to select the optimal ion exchangers and technological parameters, and technological modes for desorption of rare earth metals from a cation exchanger to obtain a concentrate of rare earth metals have been completed. The method enables to extract rare earth metals without changing the composition of commercial wet-process phosphoric acid directly in the production process of the enterprises engaged in the phosphorite treatment process.

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Section: Fig 2 Change In the Partition Coefficient Depending On The Ionic Radius Of Lanthanidesmentioning

confidence: 99%